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Bug#777760: apt: fails to satisfy dependencies of the form package:arch with arch being the native architecture



Package: apt
Version: 1.0.9.6
Severity: normal

Hi,

apt in unstable/jessie fails to satisfy binary dependencies of the form
package:arch if arch happens to be the native architecture.

steps to reproduce:

	$ sudo debootstrap --variant=minbase sid debian-sid http://127.0.0.1:3142/http.debian.net/debian
	$ sudo mkdir debian-sid/repository
	$ cat << END | sudo tee debian-sid/repository/Packages > /dev/null
	Package: foo
	Version: 1.0
	Architecture: amd64
	Depends: blub:amd64
	
	Package: blub
	Version: 1.0
	Architecture: amd64
	END
	$ echo deb file:/repository ./ | sudo tee -a debian-sid/etc/apt/sources.list > /dev/null
	$ sudo chroot debian-sid apt-get update
	$ sudo chroot debian-sid apt-get install -o Debug::pkgProblemResolver=true -o Debug::pkgDepCache::Marker=1 -o Debug::pkgDepCache::AutoInstall=1 foo
	Reading package lists... Done
	Building dependency tree... Done
	  foo:amd64 Depends on blub:amd64 [ amd64 ] < none > ( none ) can't be satisfied!
	Starting pkgProblemResolver with broken count: 1
	Starting 2 pkgProblemResolver with broken count: 1
	Investigating (0) foo [ amd64 ] < none -> 1.0 > ( unknown )
	Broken foo:amd64 Depends on blub:amd64 [ amd64 ] < none > ( none )
	Done
	Some packages could not be installed. This may mean that you have
	requested an impossible situation or if you are using the unstable
	distribution that some required packages have not yet been created
	or been moved out of Incoming.
	The following information may help to resolve the situation:
	
	The following packages have unmet dependencies:
	 foo : Depends: blub:amd64 but it is not installable
	E: Unable to correct problems, you have held broken packages.

On the other hand it works with foreign architectures (at least as far
as the resolver seems to be concerned - it only fails on the missing
Filename: field):

	$ sudo chroot debian-sid dpkg --add-architecture i386
	$ cat << END | sudo tee debian-sid/repository/Packages > /dev/null
	Package: foo
	Version: 1.0
	Architecture: amd64
	Depends: blub:i386
	
	Package: blub
	Version: 1.0
	Architecture: i386
	END
	$ sudo chroot debian-sid apt-get update
	$ sudo chroot debian-sid apt-get install -o Debug::pkgProblemResolver=true -o Debug::pkgDepCache::Marker=1 -o Debug::pkgDepCache::AutoInstall=1 foo
	Reading package lists... Done
	Building dependency tree... Done
	  MarkInstall foo [ amd64 ] < none -> 1.0 > ( unknown ) FU=1
	  Installing blub as Depends of foo
	    MarkInstall blub [ i386 ] < none -> 1.0 > ( unknown ) FU=0
	Starting pkgProblemResolver with broken count: 0
	Starting 2 pkgProblemResolver with broken count: 0
	Done
	The following extra packages will be installed:
	  blub:i386
	The following NEW packages will be installed:
	  blub:i386 foo
	0 upgraded, 2 newly installed, 0 to remove and 0 not upgraded.
	E: The package index files are corrupted. No Filename: field for package blub.

Lets try experimental apt:

	$ echo deb http://127.0.0.1:3142/http.debian.net/debian experimental main | sudo tee -a debian-sid/etc/apt/sources.list > /dev/null
	$ sudo chroot debian-sid apt-get update
	$ sudo chroot debian-sid apt-get install -t experimental apt
	$ cat << END | sudo tee debian-sid/repository/Packages > /dev/null
	Package: foo
	Version: 1.0
	Architecture: amd64
	Depends: blub:amd64
	
	Package: blub
	Version: 1.0
	Architecture: amd64
	END
	$ sudo chroot debian-sid apt-get update
	$ sudo chroot debian-sid apt-get install -o Debug::pkgProblemResolver=true -o Debug::pkgDepCache::Marker=1 -o Debug::pkgDepCache::AutoInstall=1 foo
	Reading package lists... Done
	Building dependency tree       
	Reading state information... Done
	  MarkInstall foo [ amd64 ] < none -> 1.0 > ( unknown ) FU=1
	  Installing blub as Depends of foo
	    MarkInstall blub [ amd64 ] < none -> 1.0 > ( unknown ) FU=0
	Starting pkgProblemResolver with broken count: 0
	Starting 2 pkgProblemResolver with broken count: 0
	Done
	The following extra packages will be installed:
	  blub
	The following NEW packages will be installed:
	  blub foo
	0 upgraded, 2 newly installed, 0 to remove and 0 not upgraded.
	E: The package index files are corrupted. No Filename: field for package blub.

So gladly this is only a problem with apt unstable/jessie but not in
experimental.

cheers, josch


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